Reina Wool

Front 1

Most receivers use an IF of what range??

Back 1

30 or 60Mhz

Front 2

Local Oscillator must be capable of what?

Back 2

producing frequency equal to the transmitter frequency plus or minus the IF

Hint 2

Transmitter frequency (+ ot -)

Front 3

Lowest airborne radar frequency

Back 3

3Ghz

Front 4

The oscillator frequency and ..... must be maintained by the local oscillator

Back 4

plus or minus IF

Hint 4

+ or -

Front 5

use transmit time and velocity modulation of an electron beam to produce microwave frequencies

Back 5

Klystrons

Hint 5

properties of this device

Front 6

Klystron frequency range

Back 6

500Mhz to 100Ghz

Hint 6

Mhz to Ghz

Front 7

Source of electrons

Back 7

Cathode

Hint 7

reflex klystron characterstic

Front 8

Wire grid maintained at a positive grid potential

Back 8

Control Grid

Hint 8

reflex klystron characterstic

Front 9

Accelerate and decelerate electrons

Receive and give energy to the RF, electric field

Back 9

Buncher Grid

Hint 9

reflex klystron characterstic

Front 10

Maintained at Negative voltage and controls feedback time of electrons

Back 10

Repeller Plate

Front 11

300V positive with respect to the cathode

Back 11

shell

Hint 11

also the resonant cavity

Front 12

200V-300V positive with respect to cathode

Back 12

Control grid

Front 13

100V-200V negative with respect to cathode

Back 13

Repeller

Front 14

improper tube operation is overcomed by what

Back 14

Klystron design

Front 15

Round trip of electrons are completed in shortest time in what mode?

Back 15

first mode of BW

Front 16

How is short round trip time of electrons accomplished in BW

Back 16

by making the repeller plate more negative

Front 17

Lower modes of BW have...

Back 17

high output power than other higher modes

Hint 17

low modes are 1 and 2

Front 18

overall effect lower order modes having higher output power is...

Back 18

less output power for higher modes

Front 19

If transit time increases, BW...

Back 19

increases

Hint 19

BW is wider for higher order modes

Front 20

Coarse Frequency

Back 20

Mechanical Tuning

Front 21

Mechanical tuning accomplished by...

Back 21

varying size of cavity or spacing between bruncher grids

Front 22

Moving buncher grids closer does what to frequency and capacitance

Back 22

Capacitance increases while frequency decreases

Front 23

Fine Frequency Adjusted

Back 23

Electrical Tuning

Front 24

electrical tuning accomplished by...

Back 24

varying the repeller plate voltage

Front 25

Negative potential increases, transit time and frequency does what?

Back 25

transit time decreases

frequency increases

Front 26

Causes electrons to bunch

Back 26

Electron beam and RF signal

Hint 26

interaction between two things

Front 27

Bunched electrons give up energy to...

Back 27

Helix

Hint 27

this amplifies the RF signal

Front 28

amplified RF signal creates what?

Back 28

denser electron bunch

Hint 28

vise versa

Front 29

TWT stands for

Back 29

Traveling-Wave Tube

Front 30

TWT designed for what frequencies

Back 30

300 Mhz to 50Ghz

Hint 30

Mhz to Ghz

Front 31

high gain, low noise, wide BW microwave amplifier

Back 31

TWT

Front 32

.... is placed around tube to keep electrons in a pin-like beam

Back 32

strong magnetic feild

Front 33

BWO oscillates at frequency determined by...

Back 33

speed of electrons

Front 34

Power Klystrons produce

Back 34

30MWatts

Hint 34

MWatts

Front 35

has no repeller plate and its collector is positive relative to its cathode

Back 35

power klystron

Front 36

can be pulsed by gating the cathode with a negative pulse

Back 36

power klystron

Front 37

the cathode

Back 37

emits electrons

Front 38

electrons are focused into a beam parallel to drift tube by

Back 38

beam forming plates and magnetic field

Hint 38

2 things

Front 39

Electron beam has to be

Back 39

narrow

Hint 39

so it wont overheat drift tube walls

Front 40

electron beam is passed through

Back 40

output catcher grid to slow down

Front 41

during deceleration electons

Back 41

store energy to cavity winding and coupled out

Front 42

capable of producing extreme bright image

Back 42

DVST

Front 43

Higher light output required, variable image duration, smaller, and less noise are...

Back 43

advantages of DVST

Hint 43

compared to CRT

Front 44

Develops high DC voltage where low current required

Back 44

Voltage Multipliers

Front 45

types of voltage multipliers

Back 45

Doublers, Triplers, Quadruplers

Hint 45

3 types

Front 46

Input;AC

Output ; pulsating DC

Back 46

Voltage Multiplier

Front 47

CR1 is foward and C1 charges to Peak

Back 47

Half-Wave Doubler Negative Alteration

Front 48

No Eout is applied across what in Negative alteration of Half-wave doubler

Back 48

Load resistor (RL)

Front 49

CR1 is foward biased and C1 charges to positive alteration peak

Back 49

Full Wave Doubler Positive Alteration

Front 50

CR2 and CR3 forward biased

C1 and C3 charge to value of Ea

Back 50

Half wave trippler negative alteration

Front 51

CR1 foward biased

C2 charges to two times the peak value of Ea

Back 51

Half wave trippler positive alteration

Front 52

two or more phases of AC power

Back 52

Polyphase

Hint 52

you use this when exceed 1 KWatt of power

Front 53

two or three phase AC volt that outputs DC

Back 53

Multiphase power phase

Hint 53

three to six times the Eline frequency

Front 54

consists of 3 sources of an AC voltage equal in amplitude and 120 degrees out of phase

Back 54

three phase system of multiphase transformer

Front 55

Ephase = Eline

Back 55

Delta connection

Front 56

voltage is resultant of 2 equal voltages 120 out of phase

Back 56

Wye connection

Hint 56

Ephase = Eline/ 1.73

Front 57

Conducts for 120 degrees of complete 360

Back 57

Three-phase Half wave (single Y SEC)

Front 58

Instant time, diode, load, and another diode in series with 2 SEC windings

Back 58

Three-phase Half wave (single Y SEC)

Front 59

counting circuit produces DC proportional to IF

Back 59

Step and Counters

Front 60

IF and Output voltage are

Back 60

directly proportionate

Front 61

types of counter

Back 61

positive, negative, step

Front 62

-Controls frequency indicating devices

-Electronic timing circuits

-Frequency Dividers

Back 62

counters

Front 63

to control succeeding stages in accordance with IAW

Back 63

Counter

Front 64

Where to turn to in MIMS

Back 64

2-62

Front 65

log IF amplifier amplifies on what

Back 65

a log scale

Front 66

COAC stands for

Back 66

Clutter-Operated Anti-Clutter

Front 67

senses the increased IF signal strength of large target echoes and reduces gain of IF amplifiers

Back 67

COAC

Front 68

RC network R39, R46 and C27 filters out small target returns and change to positive potential

Back 68

COAC

Front 69

video detector consists of...

Back 69

CR2, CR3, C7, R11, Q2 and Q3

Front 70

isolates detector from video amplifier

Back 70

A3Q3

Hint 70

a card

Front 71

isolates discrimination from Sweep Generator

Back 71

U7A

Front 72

input below ... output is proportionately greater

Back 72

30Mhz

Front 73

make up product detector

Back 73

U5 and Associate circuitry

Front 74

in Step counter R1 replaces...

Back 74

C2

Front 75

charge on C1 is forward biased and CR1 discharges through...

Back 75

C1

Front 76

produces output for moving targets only stationary and output phase shifted signals

Back 76

Moving Target Indicator

Hint 76

MTI

Front 77

directional coupler for sampling, reflex klystron changes in magnetron frequency

Back 77

Automatic Frequency Control

Hint 77

AFC

Front 78

emphasizes the leading edge de-emphasizing the remainder of pulses

Back 78

Fast Time Constant

Hint 78

FTC

Front 79

important factor of Reflex Klystron

Back 79

stability of the frequency in local oscillator

Front 80

Back 80

Half Wave Positve

Front 81

Back 81

Half Wave Negative

Front 82

Back 82

Half Wave Voltage Tripler

Front 83

Back 83

Delta to Delta

Front 84

Back 84

Wye to Wye

Front 85

Back 85

Delta to Wye

Front 86

Back 86

Wye to Delta

Front 87

Back 87

Three- Phase Half Wave (single Y SEC)